The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 15, 2025
Filed:
Jan. 19, 2021
Toppan Printing Co.,ltd., Tokyo, JP;
Daisuke Murata, Tokyo, JP;
Toru Ookubo, Tokyo, JP;
TOPPAN PRINTING CO., LTD., Tokyo, JP;
Abstract
A protective film containing a transparent polyolefin resin layer with improved or even superior weather resistance, and a sheet using the protective film. A protective film according to the present embodiment includes at least a transparent polyolefin resin layer. The transparent polyolefin resin layer contains a hindered amine light stabilizer represented by general formula (I) below in a range of 0.05 parts by mass or more and 5 parts by mass or less with respect to 100 parts by mass of a transparent olefin resin included in the transparent polyolefin resin layer. (In general formula (I), R is an alkyl group having 1-18 carbon atoms, or a cycloalkyl group having 5-8 carbon atoms.)